Poration



C. L. DE MARTIN AND W M. MATTEOLI.

LAMP CONSTRUCTION.

APPLICATION FILED MAY 13. 1919.

Patented Feb. 1,1921.

INVENTOR. (H/12L 6 4. 05mm. .WILLMMMMATTEOLI.

A TTORNEYS UNITED STATES PATENT OFFICE.

CHARLES L. DE MARTIN AND WILLIAM M. MATTEOLI, OF CONNERSVILLE, INDIANA,

ASSIGNORS TO INDIANA LAMP COMPANY, OF CONNERSVILLE, INDIANA, A COR-PORATION.

LAMP CONSTRUCTION.

Specification of Letters Patent.

Patented Feb. 1, 1921.

To all whom it may concern:

Be it known that we, CHARLES L. DE MARTIN and WILLIAM M. MA'I'IEOLI,citizens of the United States, and residents of Connersville, county ofFayette, and State of Indiana, have invented a certain new and usefulLamp Construction; and we do hereby declare that the-following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, in which like numerals refer to like parts.

This invention relates to a lamp construction for a head light or spotlight used in connection with automobiles, motor boats and the like, andmore specifically to the means for securing the front door or lens rimto the lamp casing, whereby it will be more readily and easily mountedor detached therefrom.

The main object of the invention is to secure the door of the lamp tothe lamp casing by a spring engaging means which will permit its beingremoved therefrom by simply pressing a button, and will at the same timedraw the door inwardly against the lamp casing under spring tension soas to cause it to wedge or seat thereon for sealing it and preventingdust and moisture from entering said casing, and also compensate for thevariation in the thickness of lens and the thickness in the metals.

In the accompanying drawings which are made a part of this applicationFigure 1 is a central vertical cross section through a lamp. Fig. 2 is aplan view of a portion of the lamp showing the detaching button.

In the drawing there is shown a lamp having a casing 10 with an outercircular flange portion 11 which is provided with a bead 12. However theflange portion 11 may be formed as an outwardly tapering surface withoutthe bead 12 thereon. There is a lamp door or lens rim 13 in which issecured a lens 14 which is held in position by the spring ring 15.Mounted within said casing there is a reflector 16 having a lamp 17mounted therein with the usual electrical connections 18. The reflectorand lamp may be mounted in any suitable manner, the constructionof-which does not form a part of this invention.

Mounted on opposite sides of the lamp casing there are springs 19 and20, securely fixed at their innerends to said lam-p. casing and havingoutwardly projecting hook portions '19 and 20' respectively extendingthrou h suitable slots in the flange portion 11. he spring 20 isoperated by a button 21 secured thereon and extending through the lampcasing so as to be externally operated for forcing said projecting hook19 down and out of engagement with the lamp door 13.

In mounting the lamp door on the casing, 1t is first engaged over thehook portion 19 of the spring 19, and brought downwardly and forced overthe lower portion of the casing when the spring 20 is pushed inwardly bythe button 21. In this movement spring 19 is forced downwardly andoutwardly until the lower portion of the door is in its proper positionat which time hook portion 19' of the spring 19 under its own tension,engaging the door forces it rearwardly so as to seat against the bead12, and the button 21 being relieved permits the hook 20 to engage andforce the lower portion of the door against said bead preventing theremoval of said door excepting when the button 21 is pressed in so as tocause the hook portion 20 of the spring 20 to be disengaged. A feltwasher 22 is mounted around the button 21 adjacent the inner wall of thecasing to prevent dust and moisture entering through the hole therein,and is held in place by the spiral spring 23 between said washer andspring.

The invention claimed is:

In a lamp structure including a lamp casing, a non-rotatable dooradapted to fit over the front of said casing, a plurality of leafsprings secured to the inner wall of said casing at one end and havingthe other end turned outwardly to form an outwardly and rearwardlyextending hook portion in position to engage the rear portion of saiddoor and force it rearwardly uniformly and longitudinally of the casingand wedge it tightly against said casing so as to make a seal, and abutton mounted on one of said springs and projecting through said casingfor permitting said spring to be forced inwardly and cause said hookportion to disengage the door so as to permit its removal from thecasing.

In witness whereof, we have hereunto affixed our signatures.

CHARLES L. DE MARTIN. WILLIAM M. MATTEOLI.

